Number System & Average MCQs for Patwari
Practice 20 free Number System & Average questions under Arithmetic — Maths.
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Patwari — Arithmetic — Number System & Average
20 Questions • Instant results & explanations • Hindi & English
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Question 1 of 20
The average age of 30 students in a class is 15 years. If the teacher's age is included, the average age becomes 16 years. What is the age of the teacher?
Question 2 of 20
The average age of 10 persons increases by 2 years when a person aged 25 years is replaced by a new person. What is the age of the new person?
Question 3 of 20
The average age of a class of 30 students is 15 years. If the teacher's age is included, the average becomes 16 years. What is the teacher's age?
Question 4 of 20
While evaluating the expression [(8 - 5) ÷ {(4 - 2) + (2 + 8/13)}], what is the exact intermediate numerical value of the entire denominator component encapsulated within the curly braces?
Question 5 of 20
A batsman scores 100 runs in his 11th innings, thereby increasing his average by 5. What is his new average?
Question 6 of 20
The average of 10 numbers is 15. If each number is multiplied by 3, what will be the new average?
Question 7 of 20
A batsman makes a score of 108 runs in his 11th inning and thereby increases his average by 6. What is his new average?
Question 8 of 20
What is the unit digit of 3^45?
Question 9 of 20
The average of 50 numbers is 36. It was later found that a number 48 was wrongly read as 23. Find the correct average.
Question 10 of 20
A batsman in his 12th innings makes a score of 63 runs and thereby increases his average by 2. What is his average after the 12th innings?
Question 11 of 20
Two numbers are in the ratio 3:4. If their LCM is 84, find the largest number.
Question 12 of 20
What is the unit digit in the product (3^65 × 6^59 × 7^71)?
Question 13 of 20
If the numerator of a fraction is increased by 20% and its denominator is increased by 25%, the new fraction becomes 3/5. What was the original fraction?
Question 14 of 20
What is the value of 0.6̅ + 0.3̅ ?
Question 15 of 20
What is the value of √(6 + √(6 + √(6 + ... ∞)))?
Question 16 of 20
The average age of 30 boys is 14 years. When the teacher is included, the average becomes 15 years. What is the teacher's age?
Question 17 of 20
Find the largest 4-digit number exactly divisible by 12, 15, and 18.
Question 18 of 20
The average age of A and B is 20 years, B and C is 19 years, and A and C is 21 years. What is the age of A?
Question 19 of 20
A batsman makes a score of 87 runs in the 17th inning, and thus increases his average by 3. Find his average after the 17th inning.
Question 20 of 20